Former Bangkok police chief Kamronwit Thoopkrachang, arrested for illegal possession of a handgun and ammunition in Japan last month, has been released. Inset: the gun that apparently passed through the CTX airport luggage scanning device undetected Criminal charges will be waiting for former Bangkok police chief Kamronwit Thoopkrachang this afternoon when he arrives back in Thailand at 3:30pm after a stint in a Japanese prison.The Airports of Thailand (AoT) will file criminal charges for the crime of bringing a gun on board a plane. Airport authorities and the police will seek evidence from Japan to support the charges.Kamronwit will not be given any special privileges when he arrives today.